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Merge pull request #76109 from vllry/kubeproxy-autocleanup

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Remove kube-proxy autocleanup for inactive modes
This commit is contained in:
Kubernetes Prow Robot 2019-04-04 22:31:31 -07:00 committed by GitHub
commit 71f4c9a51c
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3 changed files with 2 additions and 32 deletions
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2
cmd/kube-proxy/app/server.go
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@ -143,7 +143,7 @@ func (o *Options) AddFlags(fs *pflag.FlagSet) {
fs.BoolVar(&o.CleanupAndExit, "cleanup-iptables", o.CleanupAndExit, "If true cleanup iptables and ipvs rules and exit.")
fs.MarkDeprecated("cleanup-iptables", "This flag is replaced by --cleanup.")
fs.BoolVar(&o.CleanupAndExit, "cleanup", o.CleanupAndExit, "If true cleanup iptables and ipvs rules and exit.")
fs.BoolVar(&o.CleanupIPVS, "cleanup-ipvs", o.CleanupIPVS, "If true make kube-proxy cleanup ipvs rules before running. Default is true")
fs.BoolVar(&o.CleanupIPVS, "cleanup-ipvs", o.CleanupIPVS, "If true and --cleanup is specified, kube-proxy will also flush IPVS rules, in addition to normal cleanup.")
// All flags below here are deprecated and will eventually be removed.

30
cmd/kube-proxy/app/server_others.go
View File

@ -53,13 +53,12 @@ import (
// NewProxyServer returns a new ProxyServer.
func NewProxyServer(o *Options) (*ProxyServer, error) {
return newProxyServer(o.config, o.CleanupAndExit, o.CleanupIPVS, o.scheme, o.master)
return newProxyServer(o.config, o.CleanupAndExit, o.scheme, o.master)
}
func newProxyServer(
config *proxyconfigapi.KubeProxyConfiguration,
cleanupAndExit bool,
cleanupIPVS bool,
scheme *runtime.Scheme,
master string) (*ProxyServer, error) {
@ -174,17 +173,6 @@ func newProxyServer(
proxier = proxierIPTables
serviceEventHandler = proxierIPTables
endpointsEventHandler = proxierIPTables
// No turning back. Remove artifacts that might still exist from the userspace Proxier.
klog.V(0).Info("Tearing down inactive rules.")
// TODO this has side effects that should only happen when Run() is invoked.
userspace.CleanupLeftovers(iptInterface)
// IPVS Proxier will generate some iptables rules, need to clean them before switching to other proxy mode.
// Besides, ipvs proxier will create some ipvs rules as well. Because there is no way to tell if a given
// ipvs rule is created by IPVS proxier or not. Users should explicitly specify `--clean-ipvs=true` to flush
// all ipvs rules when kube-proxy start up. Users do this operation should be with caution.
if canUseIPVS {
ipvs.CleanupLeftovers(ipvsInterface, iptInterface, ipsetInterface, cleanupIPVS)
}
} else if proxyMode == proxyModeIPVS {
klog.V(0).Info("Using ipvs Proxier.")
proxierIPVS, err := ipvs.NewProxier(
@ -214,10 +202,6 @@ func newProxyServer(
proxier = proxierIPVS
serviceEventHandler = proxierIPVS
endpointsEventHandler = proxierIPVS
klog.V(0).Info("Tearing down inactive rules.")
// TODO this has side effects that should only happen when Run() is invoked.
userspace.CleanupLeftovers(iptInterface)
iptables.CleanupLeftovers(iptInterface)
} else {
klog.V(0).Info("Using userspace Proxier.")
// This is a proxy.LoadBalancer which NewProxier needs but has methods we don't need for
@ -243,18 +227,6 @@ func newProxyServer(
}
serviceEventHandler = proxierUserspace
proxier = proxierUserspace
// Remove artifacts from the iptables and ipvs Proxier, if not on Windows.
klog.V(0).Info("Tearing down inactive rules.")
// TODO this has side effects that should only happen when Run() is invoked.
iptables.CleanupLeftovers(iptInterface)
// IPVS Proxier will generate some iptables rules, need to clean them before switching to other proxy mode.
// Besides, ipvs proxier will create some ipvs rules as well. Because there is no way to tell if a given
// ipvs rule is created by IPVS proxier or not. Users should explicitly specify `--clean-ipvs=true` to flush
// all ipvs rules when kube-proxy start up. Users do this operation should be with caution.
if canUseIPVS {
ipvs.CleanupLeftovers(ipvsInterface, iptInterface, ipsetInterface, cleanupIPVS)
}
}
iptInterface.AddReloadFunc(proxier.Sync)

2
cmd/kube-proxy/app/server_windows.go
View File

@ -144,8 +144,6 @@ func newProxyServer(config *proxyconfigapi.KubeProxyConfiguration, cleanupAndExi
}
proxier = proxierUserspace
serviceEventHandler = proxierUserspace
klog.V(0).Info("Tearing down pure-winkernel proxy rules.")
winkernel.CleanupLeftovers()
}
return &ProxyServer{